﻿/*
	[ru]	Пример использования шрифтов и системы ввода.
*/

#include "Engine.h"
using namespace Engine;


class CExample : public ICoreEventListener
{
private:
	CFontMaterial		cFont;
	uint				uCounter;
	float				fLastTime;
	bool				bShowPressed;

public:
	CExample(): fLastTime(0), bShowPressed(false), uCounter(0)
	{
	}

	~CExample()
	{
	}
	
	void Draw();
	void Process();

	virtual void OnInit();
	virtual void OnFree();

	virtual void OnUpdate();

	virtual void Release()									{ delete this; }
	virtual e_win_event::type GetEvents()					{ return e_win_event::UNKNOWN; }

	virtual void ProcessMessage(const TWindowEvent &sEvent)	{}
	virtual void OnException()								{}
	
	static int s_RunEngine();
};


inline void CExample::Draw()
{
	RENDERGL()->ClearBuffers();
	RENDERGL()->Mode2D();

	cFont.DrawMultiline( vec2(-0.4f, 0.9f),	"F1 - begin text input\n"\
											"F2 - end text input\n" \
											"F3 - show/hide pressed keys names\n"\
											"Enter - 'D' key press emulation",
						color4u(255, 0, 128, 255) );

	cFont.DrawMultiline( frect(-1.f, -1.f, 0.8f, 0.7f), INPUT()->GetTextA(), color4u() );

	
	ext_string	str( "#[color:FF0000FF]ext string test:\n"\
					 "#[color:00FF00FF]#[scale:1.5]green line\n"\
					 "#[color:0000FFFF]#[spacing:2.0]blue\nline\n" );

	cFont.DrawExt( frect(-0.3f, -0.8f, 0.8f, 0.2f), str );
	

	if ( bShowPressed )
	{
		string					s_pressed;
		CInput::key_array_t		a_keys;

		INPUT()->GetPressedKeys( a_keys );

		for (usize i = 0; i < a_keys.Count(); ++i)
			s_pressed << INPUT()->GetKeyName( a_keys[i] ) << "\n";

		cFont.DrawMultiline( vec2( 0.6f, 0.9f ), s_pressed, color4u(0, 255, 125, 255) );
	}

	BATCH()->Flush();
	BATCH()->Clear();

	RENDERGL()->SwapBuffers();
}


inline void CExample::Process()
{
	INPUT()->Update();

	if ( INPUT()->IsKey(e_key::ESCAPE) )
		CORE()->QuitEngine();

	if ( INPUT()->IsKeyClick( e_key::F1 ) )
		INPUT()->BiginTextInputA();

	if ( INPUT()->IsKeyClick( e_key::F2 ) )
		INPUT()->EndTextInputA();

	if ( INPUT()->IsKeyClick( e_key::F3 ) )
		bShowPressed = !bShowPressed;

	if ( INPUT()->IsKeyClick( e_key::RETURN ) )
	{
		INPUT()->OS_KeyState( e_key::D, true );
	}

	if ( INPUT()->IsKeyUp( e_key::RETURN ) )
	{
		INPUT()->OS_KeyState( e_key::D, false );
	}

	INPUT()->Reset();

	++uCounter;
}


void CExample::OnInit()
{
	bool	ret = true;
	
	ret = cFont.Load( "LucidaConsole.fnt", e_def_program::FONT_GS );
	cFont.SetPrimitiveType( gl_primitive::POINT );
	cFont.SetScale( 0.045f );

	RENDERGL()->SetClearColor( color4f(0.f) );
	RENDERGL()->SetClearDepth( 1.f );

	SMAN()->BlendFunc( gl_blend_func::SRC_ALPHA, gl_blend_func::ONE_MINUS_SRC_ALPHA );
	SMAN()->Enable( e_gl_state::BLEND );
	SMAN()->Disable( e_gl_state::DEPTH_TEST );


	float32_t	f( 1234567.f );

	uint	e1 = f.GetExponentBit() + 15;
	uint	e2 = f._bits.e - (127 - 15);

	ASSERT( ret );
}


void CExample::OnFree()
{
}


void CExample::OnUpdate()
{
	CORE()->Update();
	Draw();
	
	fLastTime += CORE()->GetUpdateTimeDelta();

	if ( fLastTime > 1.f/60.f )
	{
		fLastTime = 0.f;
		Process();
	}
}


int CExample::s_RunEngine()
{
	CExample	*		p_example			= new CExample();
	TEngInitParams		s_init_params;
	e_log_output::bits	e_log_bits			= e_log_output::LOG_FILE_BIT
											DEBUG_ONLY( | e_log_output::MESSAGE_BIT )
											;
	
	s_init_params.eFlags					= e_eng_init_flags::OPENGL_4_2
											| e_eng_init_flags::CORE_PROFILE
											| e_eng_init_flags::EXTENDED_CONTEXT
											//| e_eng_init_flags::DEBUG_MODE
											//| e_eng_init_flags::STREAMED_LOAD
											//| e_eng_init_flags::STEREO
											//| e_eng_init_flags::ES2_PROFILE
											;
	s_init_params.sApplicationName			= "Font Sample";
	s_init_params.sClassName				= "";
	s_init_params.pHandle					= nullptr;
	s_init_params.pIcon						= nullptr;

	s_init_params.sAudioParams.sAudioDevice	= "";

	s_init_params.sRenInit.uColorDepth		= 32;
	s_init_params.sRenInit.uZBufferDepth	= 24;
	s_init_params.sRenInit.uStencilDepth	= 0;
	s_init_params.sRenInit.uColorSamples	= 0;
	s_init_params.sRenInit.uCSAASamples		= 0;
	s_init_params.sRenInit.uMSAASamples		= 0;
	s_init_params.sRenInit.uPixelFormat		= 0;

	s_init_params.sRenParams.bFullScreen	= false;
	s_init_params.sRenParams.bVSync			= true;
	s_init_params.sRenParams.eMode			= e_window_mode::ALLOW_SIZING | e_window_mode::CENTERED;
	s_init_params.sRenParams.sWinPos		= ivec2( 0, 0 );
	s_init_params.sRenParams.sWinSize		= ivec2( 640, 480 );
	
	s_init_params.sExtParams.uLogLevel		= 15;
	s_init_params.sExtParams.eLogFilter		= e_log_msg::FILTER_ALL;
	s_init_params.sExtParams.eResManFlags	= e_resman_flags::FREE_NON_REF | e_resman_flags::SET_DEFAUL_RES;
	s_init_params.sExtParams.sResDirectory	= "data";
	s_init_params.uLoadThreads				= 0;
	s_init_params.uRenderThreads			= 0;
	
	if ( !RunEngine( p_example, s_init_params, e_log_bits, "log.html", "data\\config\\settings.ocf", CCore::GetVersion() ) )
		return 1;

	return 0;
}


int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
	return CExample::s_RunEngine();
}